GRB 190530A:From Precursor,Prompt Emission to Afterglow all Originated from Synchrotron Radiation

作     者：Hui-Ya Liu Xiang-Gao Wang Li-Ping Xin Zi-Min Zhou Liang-Jun Chen Bing Li Yuan-Gui Yang Qi Luo Cheng-Kui Li Shao-Lin Xiong Ling-Jun Wang Xu-Hui Han Li-Ming Song Jian-Yan Wei En-Wei Liang Shuang-Nan Zhang Hui-Ya Liu;Xiang-Gao Wang;Li-Ping Xin;Zi-Min Zhou;Liang-Jun Chen;Bing Li;Yuan-Gui Yang;Qi Luo;Cheng-Kui Li;Shao-Lin Xiong;Ling-Jun Wang;Xu-Hui Han;Li-Ming Song;Jian-Yan Wei;En-Wei Liang;Shuang-Nan Zhang

作者机构：Guangxi Key Laboratory for Relativistic AstrophysicsDepartment of PhysicsGuangxi UniversityNanning 530004China GXU-NAOC Center for Astrophysics and Space SciencesNanning 530004China CAS Key Laboratory of Space Astronomy and TechnologyNational Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Key Laboratory of Particle AstrophysicsInstitute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Physics and Electronic InformationHuaibei Normal UniversityHuaibei 235000China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2022年第22卷第6期

页      面：22-32页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the Open Project Program of the Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences supported by the National Key R&D Program of China(grant No.2021YFA0718500) the National Natural Science Foundation of China(grant Nos.U1938201,12103055,11863007 and 11973055) the Guangxi Science Foundation(grant No.2018GXNSFGA281007) the Innovation Project of Guangxi Graduate Education(grant No.YSCW2019050) the Teaching reform project of Guangxi Higher Education(grant No.2019JGZ102) 

主　　题：(stars)gamma-ray burst:individual(GRB 190530A)-(stars)gamma-ray burst general-virtual observatory tools 

摘      要：GRB 190530A was jointly observed by the High Energy X-ray Telescope of the Hard X-ray Modulation Telescope(Insight-HXMT/HE)and the Ground-Based Wide-Angle Camera network(GWAC-N)with the extremely large field of *** triggered by Insight-HXMT/HE and Fermi/GBM,we observed the optical emission of GRB 190530A,using the 30 cm telescope of GWAC(GWAC-F30)to search and locate its *** observation of the late afterglow of GRB 190530A was made with the 2.16 m telescope at Xinglong *** this paper,we make a detailed exploration of the origin of GRB *** the prompt emission,a“double-trackingpattern is presented both for the low-energy spectral indexαand the peak energy Epin the Band function with Insight-HXMT/HE and Fermi/GBM data;the results of GRB 190530A are consistent with the Amati and Yonetoku correlations;the spectral lag(τ)versus energy(E)can be estimated withτ=-3.0±0.06+(0.17±0.03)*** synchrotron radiation can account for the origin of GRB190530A prompt emission ***αand Epof the precursor are essentially the same as that of the main prompt emission,implying that they have the same *** the afterglow,it can be described with the external forward shock model in ISM circumburst *** summary,from precursor,prompt emission to afterglow of GRB 190530A all originated from synchrotron radiation.